例句與造句

1. However, whenever possible, CJNT, which was airing the same show, duplicated the move in order to maintain the signal substitutions.
2. The question of signal substitution, by which Canadian cable and satellite providers substitute the signal of a local or domestic channel over a foreign or distant channel carrying the same program, is rendered more complex by the existence of a reverse grey market.
3. It's difficult to find signal substitution in a sentence. 用signal substitution造句挺難的